/*
 * JBox2D - A Java Port of Erin Catto's Box2D
 * 
 * JBox2D homepage: http://jbox2d.sourceforge.net/
 * Box2D homepage: http://www.box2d.org
 * 
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 * 
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 * 
 * 1. The origin of this software must not be misrepresented; you must not
 * claim that you wrote the original software. If you use this software
 * in a product, an acknowledgment in the product documentation would be
 * appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 * misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 */

package org.jbox2d.collision;

//Updated to rev 56->136 of b2PairManager.h

public class Pair implements Comparable<Pair> {
	private static final int PAIR_BUFFERED = 0x0001;

	private static final int PAIR_REMOVED = 0x0002;

	private static final int PAIR_FINAL = 0x0004;

	public Object userData;

	public int proxyId1;

	public int proxyId2;

	public int status;

	public int next;

	public Pair() {

	}

	/**
	 * Copy constructor
	 */
	public Pair(final Pair other) {
		this.userData = other.userData;
		this.proxyId1 = other.proxyId1;
		this.proxyId2 = other.proxyId2;
		this.status = other.status;
	}

	public void setBuffered() {
		status |= Pair.PAIR_BUFFERED;
	}

	public void clearBuffered() {
		status &= ~Pair.PAIR_BUFFERED;
	}

	public boolean isBuffered() {
		return (status & Pair.PAIR_BUFFERED) == Pair.PAIR_BUFFERED;
	}

	public void clearRemoved() {
		status &= ~Pair.PAIR_REMOVED;
	}

	public void setRemoved() {
		status |= Pair.PAIR_REMOVED;
	}

	public boolean isRemoved() {
		return (status & Pair.PAIR_REMOVED) == Pair.PAIR_REMOVED;
	}

	public void setFinal() {
		status |= Pair.PAIR_FINAL;
	}

	public boolean isFinal() {
		return (status & Pair.PAIR_FINAL) == Pair.PAIR_FINAL;
	}

	public int compareTo(final Pair p) {
		// XXX check
		return proxyId1 - p.proxyId1;
	}
}